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diskgroup
2010 Feb 25
2
Ordering categories on a boxplot - a serious trap??
...R's part was to allow me to do it. My goal was to control the order of factor levels appearing horizontally on a boxplot. Enter search engines and perhaps some creative stupidity on my part, and I came up with the following:
v=read.table("factor-order.txt",header=TRUE);
levels(v$doseGroup) = c("L", "M", "H");
boxplot(v$dose~v$doseGroup);
A good way to see the trap is to evaluate:
v=read.table("factor-order.txt",header=TRUE);
par(mfrow=c(2,1));
boxplot(v$dose~v$doseGroup);
levels(v$doseGroup) = c("L", "M", "H&qu...